General Description
The AAT3104 is a charge-pump based, current-source white LED driver capable of driving one to four LEDs up to 30mA, each. It automatically switches between 1x mode and 2x mode to maintain the highest efficiency and optimal LED current accuracy and matching.
The AAT3104 charge pump’s 1x mode (bypass mode) has very low resistance allowing LED current regulation to be maintained with input supply voltage approaching the LED forward voltage.
LED brightness is controlled using AnalogicTech’s patented S2Cwire™ single wire interface. The AAT3104 is available in a 2x2mm 10-lead SC70JW-10 package.

Features
*Drives up to 4 LEDs at up to 31mA each
*Automatic Switching Between 1x and 2x Modes
*1MHz Switching Frequency
*Linear LED Output Current Control
*Single-wire, S2Cwire Interface
-AAT3104-1: 16-step
-AAT3104-2: 32-step
*±10% LED Output Current Accuracy
*±3% LED Output Current Matching
*Low-current Shutdown Mode
*Built-in Thermal Protection
*Automatic Soft-start
*Available in 2x2mm SC70JW-10 Package

Applications
*Cordless Phone Handsets
*Digital Cameras
*Mobile Phone Handsets
*MP3 and PMP Players

AAT3104IJQ-1-T1, AAT3104IJQ-2-T1

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General Description
The AAT3105 is a charge-pump based, current-source white LED driver capable of driving one to four LEDs up to 30mA, each. It automatically switches between 1x mode and 2x mode to maintain the highest efficiency and optimal LED current matching.
The AAT3105 charge pump’s 1x mode (bypass mode) has very low resistance, allowing LED current regulation to be maintained with input supply voltage approaching the LED forward voltage.
LED brightness is controlled using a universal PWM interface. The AAT3105 is available in a Pb-free, 2x2mm 10-lead SC70JW-10 package

Features
*Drives up to 4 LEDs at up to 30mA each
*Automatic Switching Between 1x and 2x Modes
*0.85MHz Switching Frequency
*Linear LED Output Current Control
*Universal PWM Interface
*±10% LED Output Current Accuracy
*±3% LED Output Current Matching
*Low-current Shutdown Mode
*Built-in Thermal Protection
*Automatic Soft-start
*Available in 2x2mm SC70JW-10 Package

Applications
*Cell Phones
*Digital Still Cameras
*MP3 Players
*Personal Data Assistants (PDAs)

AAT3105IJQ-T1
TAG Driver, Pump, WLED

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GENERAL DESCRIPTION
The ACT6359 step-up DC/DC converter drives white LEDs with an externally programmable constant current.
This device features an integrated, 40V power MOSFET that is capable of driving up to
ten white LEDs in series, providing inherent current matching for uniform brightness.
WLED brightness adjustment is easily achieved via simple external circuitry, which accepts either a PWM or an analog dimming control signal.
The ACT6359 features a variety of protection circuits, including integrated over voltage protection (OVP), cycle-by-cycle current limiting, and thermal shutdown protection circuitry.
The ACT6359 has a 500mA current limit, and is available in a small 6-pin SOT23-6 package.

FEATURES
* High-Efficiency DC/DC WLED Bias Supply
* Internal 40V, 0.55Ω Power MOSFET
* Up to 10 WLEDs per String
* 500mA Peak Current
* Supports Analog and PWM LED Dimming
* Integrated Over-Voltage Protection (OVP)
* Thermal Shutdown
* Cycle-by-Cycle Over Current Protection
* Tiny SOT23-6 Package

APPLICATIONS
* TFT LCD Displays
* Smart Phones
* Portable Media Players
* GPS/Personal Navigation Devices
TAG supplies, WLED

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GENERAL DESCRIPTION
The ACT6360 step-up DC/DC converter drives white LEDs with an externally programmable constant current.
This device features an integrated, 40V power MOSFET that is capable of driving up to
ten white LEDs in series, providing inherent current matching for uniform brightness.
WLED brightness adjustment is easily achieved via simple external circuitry, which accepts either a PWM or an analog dimming control signal.
The ACT6360 features a variety of protection circuits, including integrated over voltage protection (OVP), cycle-by-cycle current limiting, and thermal shutdown protection circuitry.
The ACT6360 has a 1000mA current limit, and is available in a small 6-pin SOT23-6 package.

FEATURES
* High-Efficiency DC/DC WLED Bias Supply
* Internal 40V, 0.55Ω Power MOSFET
* Up to 10 WLEDs per String
* 1000mA Peak Current
* Supports Analog and PWM LED Dimming
* Integrated Over-Voltage Protection (OVP)
* Thermal Shutdown
* Cycle-by-Cycle Over Current Protection
* Tiny SOT23-6 Package

APPLICATIONS
* TFT LCD Displays
* Smart Phones
* Portable Media Players
* GPS/Personal Navigation Devices

TAG supplies, WLED

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DESCRIPTION
The SP6887 is a 4-channel charge pump white LED driver, capable of driving up to 4 LEDs
connected in parallel.
The device operates in either 1x mode or 1.5x fractional mode, and it can switch from 1x mode to 1.5x mode automatically when the input voltage decreases.
Its internal 4 current sink regulators ensure both LED current matching and brightness uniformity.
The LED current can be programmed by an external resistor, RSET, connected between the RSET pin and ground.
LED currents of up to 30mA are supported by the input supply voltage over a range of 2.7V to 5.5V, making the device optimized for Li-Ion battery applications.
The SP6887 has a fixed switching frequency of 1MHz, allowing the use of very small value ceramic capacitors.
The enable input pin allows the device to be placed in shutdown mode while reducing current consumption to less than 1μA.
LED dimming can be done by several methods including using a DC voltage to set the RSET pin current, adding a switched resistor in parallel with RSET or applying a PWM signal to CTRx pin or EN pin.

FEATURES
* Peak Efficiency: 90%
* Individual Current Regulation
* 3-bit Digital Output Control
* 1x and 1.5x Modes of Operation
* Current Matching with a Max Tolerance of 3%
* Output Current up to 30mA per LED
* Fixed Frequency of 1MHz
* Open LED Protection
* Pb-Free Thin QFN-16 3mmx3mm Package

APPLICATIONS
* Cellular Phones
* LED backlighting
* LCD Modules
* Handheld Devices
* Digital Cameras
* PDAs
* MP3 Players

SP6887ER4-L
SP6887ER4-L/TR

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GENERAL DESCRIPTION
The ACT6357 and ACT6358 step-up DC/DC converters drive white LEDs with an externally programmable constant current.
These devices feature integrated, 40V power MOSFETs that are capable of driving up to ten white LEDs in series, providing inherent current matching for uniform brightness.
WLED brightness adjustment is easily achieved via a dual-function pin, which accepts either a PWM or an analog dimming control signal.
The ACT6357 and ACT6358 feature a variety of protection circuits, including integrated over voltage protection (OVP), programmable soft-start, cycleby- cycle current limiting, and thermal shutdown protection circuitry.
The ACT6357 has 500mA current limit, while the ACT6358 has 1A current limit.
Both parts are available in a small 3mm x 3mm 8-pin TDFN33-8.

FEATURES
* High-Efficiency DC/DC WLED Bias Supply
* Internal 40V, 0.55Ω Power MOSFET
* Up to 10 WLEDs per String
* Two Peak Current Options:
-ACT6357: 0.5A
-ACT6358: 1A
* Supports Analog and PWM LED Dimming
* Integrated Over-Voltage Protection (OVP)
* Programmable Soft-Start Function
* Thermal Shutdown
* Cycle-by-Cycle Over Current Protection
* Tiny TDFN33-8 Package

APPLICATIONS
* TFT LCD Displays
* Smart Phones
* Portable Media Players
* GPS/Personal Navigation Devices

ACT6358
ACT6357NH-T
ACT6358NH-T

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